/**
 * Securo-Net CSS Variables
 * Design System - Colors, Typography, Spacing
 */

:root {
    /* Primary Colors - Marine Blue Theme */
    --color-primary: #1a365d;
    --color-primary-light: #2c5282;
    --color-primary-dark: #0f2744;

    /* Accent Colors */
    --color-accent: #3182ce;
    --color-accent-light: #4299e1;
    --color-accent-dark: #2b6cb0;

    /* Secondary Colors */
    --color-secondary: #2d3748;
    --color-secondary-light: #4a5568;
    --color-secondary-dark: #1a202c;

    /* Success/Warning/Error */
    --color-success: #38a169;
    --color-warning: #d69e2e;
    --color-error: #e53e3e;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f7fafc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-400: #a0aec0;
    --color-gray-500: #718096;
    --color-gray-600: #4a5568;
    --color-gray-700: #2d3748;
    --color-gray-800: #1a202c;
    --color-gray-900: #171923;
    --color-black: #000000;

    /* Background Colors */
    --bg-light: #f7fafc;
    --bg-dark: #1a202c;
    --bg-navbar: #ffffff;
    --bg-topbar: #2d3748;
    --bg-footer: #1a365d;

    /* Text Colors */
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #ffffff;
    --text-link: #3182ce;
    --text-link-hover: #2b6cb0;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */

    /* Border Radius */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.375rem;  /* 6px */
    --radius-lg: 0.5rem;    /* 8px */
    --radius-xl: 0.75rem;   /* 12px */
    --radius-2xl: 1rem;     /* 16px */
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;

    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-xxl: 1536px;

    /* Breakpoints (for reference - use in media queries) */
    --breakpoint-xs: 480px;
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-xxl: 1920px;

    /* Fluid Typography - Responsive font sizes using clamp() */
    --font-size-fluid-sm: clamp(0.875rem, 0.8rem + 0.25vw, 1rem);
    --font-size-fluid-base: clamp(1rem, 0.9rem + 0.4vw, 1.125rem);
    --font-size-fluid-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --font-size-fluid-xl: clamp(1.25rem, 1rem + 1vw, 1.5rem);
    --font-size-fluid-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
    --font-size-fluid-3xl: clamp(1.875rem, 1.5rem + 2vw, 2.5rem);
    --font-size-fluid-4xl: clamp(2.25rem, 1.8rem + 2.5vw, 3rem);
    --font-size-fluid-5xl: clamp(3rem, 2.5rem + 3vw, 4rem);

    /* Touch Target Size (Accessibility) */
    --touch-target-min: 44px;
}

/* Dark Mode Variables (für zukünftige Erweiterung) */
@media (prefers-color-scheme: dark) {
    :root.auto-dark {
        --bg-light: #1a202c;
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
    }
}